1021121104 has 40 divisors (see below), whose sum is σ = 2085992480. Its totient is φ = 482889600.

The previous prime is 1021121063. The next prime is 1021121147. The reversal of 1021121104 is 4011211201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207634 + ... + 212494.

It is an arithmetic number, because the mean of its divisors is an integer number (52149812).

Almost surely, 2^1021121104 is an apocalyptic number.

It is an amenable number.

1021121104 is an abundant number, since it is smaller than the sum of its proper divisors (1064871376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021121104 is a wasteful number, since it uses less digits than its factorization.

1021121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 5573 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1021121104 is about 31954.9855891064. The cubic root of 1021121104 is about 1006.9913747676.

Adding to 1021121104 its reverse (4011211201), we get a palindrome (5032332305).

The spelling of 1021121104 in words is "one billion, twenty-one million, one hundred twenty-one thousand, one hundred four".